Several rubble mound breakwaters (RMB) were damaged and even collapsed during the past tsunamis. The main reasons for the failure of the breakwaters occurred due to the combined effects of seepage and scouring. Limited articles are available dealing with the behaviour of RMB during the tsunami. Furthermore, few available articles are related to developing countermeasures for the RMB against tsunamis. Therefore, an attempt has been made in the study to determine the exact behaviour of the RMB under the action of the tsunami. In addition, the main aim of the present study is to develop countermeasures to make the breakwater tsunami resilient. The present study proposes a novel geosynthetics-reinforced RMB to mitigate tsunami-induced breakwater damage. Based on the available information, this is the first time geosynthetics have been used in the RMB to mitigate tsunami-induced damage. Geogrid layers, geobags, sheet piles and crown walls (with shear keys) are adopted as countermeasure elements against the tsunami. Since the height of a tsunami can exceed its design tsunami height, tsunami waves were allowed to overflow the breakwater in physical model tests. Comparative analyses between the reinforced and unreinforced RMB were performed by conducting physical model tests, analytical tools, and numerical simulations.

在过去的海啸中，一些碎石堆防波堤（RMB）遭到损坏甚至倒塌。防波堤溃决的主要原因是渗流和冲刷的共同作用。关于海啸期间人民币行为的文章有限。此外，关于制定人民币应对海啸对策的文章也很少。因此，本研究试图确定人民币在海啸作用下的确切表现。此外，本研究的主要目的是制定对策，使防波堤具有抵御海啸的能力。本研究提出了一种新型土工合成材料增强人民币来减轻海啸引起的防波堤损坏。根据现有信息，这是人民币首次使用土工合成材料来减轻海啸造成的损害。采用土工格栅层、土工袋、板桩和冠墙（带剪键）作为海啸对策元件。由于海啸的高度可能超过其设计的海啸高度，因此在物理模型测试中允许海啸波浪溢出防波堤。通过物理模型试验、分析工具和数值模拟，对加固和未加固人民币进行了比较分析。